2003 CHEVROLET C/K oil dipstick

6-22 Checking Engine Oil
It's a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick
is located in the engine
compartment on the
driver's side of the vehicle.
Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don't, the oil dipstick
might not show the actual level.Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.

6-23 When to Add Engine Oil
If the oil is at or below the cross-hatched area, then
you'll need to add at least one quart of oil. But you must
use the right kind. This part explains what kind of oil to
use. For engine oil crankcase capacity, see ªCapacities
and Specificationsº in the Index.
NOTICE:
Don't add too much oil. If your engine has
so much oil that the oil level gets above the
cross
-hatched area upper mark that shows
the proper operating range, your engine could
be damaged.
The engine oil fill cap is
located near the engine oil
dipstick in the engine
compartment, on the
driver's side of the vehicle.
Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you're through.

6-27
Engine Oil (Caterpillar

Diesel Engines)
See your Caterpillar
Operation & Maintenance Manual
for information on oil quality and viscosities as well as
the temperature range chart.
Engine Oil (DURAMAX Diesel)
Checking Engine Oil
It's a good idea to check your engine oil level every time
you get fuel.
The engine oil dipstick is
located in the engine
compartment on the driver's
side of the vehicle.
In order to get an accurate
reading, the oil must be
warm (at normal operating
temperature) and the vehicle
must be on level ground.Turn off the engine and give the oil at least five minutes
to drain back into the oil pan. With a cool engine, allow
30 minutes. If you don't, the oil dipstick might not show
the actual level.
Pull out the dipstick and clean it with a paper towel or a
cloth, then push it back in all the way. Remove it again,
keeping the tip down.

6-28 When to Add Engine Oil
If the oil is at or below the ADD line, then you'll need
to add at least one quart of oil. But you must use the
right kind. This part explains what kind of oil to use.
For engine oil crankcase capacity, see ªCapacities and
Specificationsº in the Index.
NOTICE:
Don't add too much oil. If your engine has so
much oil that the oil level gets above the proper
operating range, your engine could be damaged.
Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you're through.
What Kind of Engine Oil to Use
Look for these two things:

CH
-4
Oils designated as API CH
-4 are best for your
vehicle. The CH
-4 designation may appear either
alone or in combination with other API designations,
such as API CH
-4/SJ or CH-4/CG-4/SJ.
These letters show American Petroleum Institute
(API) levels of quality.
NOTICE:
If you use oil that doesn't have this designation,
CH
-4, you can cause engine damage which is not
covered by your warranty.